RFC 6471 on Overview of Best Email DNS-Based List (DNSBL) Operational Practices

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        RFC 6471

        Title:      Overview of Best Email DNS-Based 
                    List (DNSBL) Operational Practices 
        Author:     C. Lewis, M. Sergeant
        Status:     Informational
        Stream:     IRTF
        Date:       January 2012
        Mailbox:    clewisbcp <at> cauce.org, 
                    matt <at> sergeant.org
        Pages:      21
        Characters: 49264
        Updates/Obsoletes/SeeAlso:   None

        I-D Tag:    draft-irtf-asrg-bcp-blacklists-10.txt

        URL:        http://www.rfc-editor.org/rfc/rfc6471.txt

The rise of spam and other anti-social behavior on the Internet has
led to the creation of shared DNS-based lists (DNSBLs) of IP
addresses or domain names intended to help guide email filtering.
This memo summarizes guidelines of accepted best practice for the
management of public DNSBLs by their operators as well as for the
proper use of such lists by mail server administrators (DNSBL users),
and it provides useful background for both parties.  It is not
intended to advise on the utility or efficacy of particular DNSBLs or